Add OS64 platform support

Author: MSNexploder

ios.toolchain.cmake

@@ -135,6 +135,11 @@ if (IOS_PLATFORM STREQUAL "OS")
   if(NOT IOS_ARCH)
     set(IOS_ARCH armv7 armv7s arm64)
   endif()
+ elseif (IOS_PLATFORM STREQUAL "OS64")
+  set(XCODE_IOS_PLATFORM iphoneos)
+  if(NOT IOS_ARCH)
+    set(IOS_ARCH arm64)
+  endif()
 elseif (IOS_PLATFORM STREQUAL "SIMULATOR")
   set(XCODE_IOS_PLATFORM iphonesimulator)
   if(NOT IOS_ARCH)